2004•China Water & WastewaterRequires access
Cause and Control of Sludge Bulking in Pure Oxygen Aeration System
Lian Li-guo
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Abstract
The cause of sludge bulking was investigated by analyzing the operating status of pure oxygen aeration system from beginning to the end of the sludge bulking in Tianjin Petrochemical Water Supply and Drainage Works.The results show that the shocked sludge system under long time low load running,sludge aging and the lack of oxygen in part of secondary settling tank result in sludge bulking.The corresponding prevention and control approaches were proposed in detail.